power

Hi all,
Sorry if this has been covered before but I am new to this site and have not been able to find the exact information I have been looking for.
I am currently in my last year of a Mechanical & Manufacturing Engineering degree and my final project is titled as follows;
"To improve the...

So I got an old chainsaw that works very good. I also have a motoried bike with an engine from one of the kits you can buy. Would the chainsaw engine work better than the one from the kit? I know I made a thread like this earlier but this is more specific to my build.
The current engine is a...

Quick story
Old bike frame broke while riding. The frame had snapped right above the rear mount due to a small crack that got worse after a month of engine vibration. (Vibration isn't bad, I used the frame with knowledge of the crack) During my ride the back wheel seized and I slid to a stop...

This maybe an old idea or new but not sure. I was starting to give up trying to search for this, but I have been trying to find a solution to get my phantom bike to give enough juice to charge a battery and was struggling to get an answer. I was wondering if anyone tried making the four stroke...